app/views/mailboxer/notification_mailer/new_notification_email.text.erb
You have a new notification: <%= @notification.subject.html_safe? ? @notification.subject : strip_tags(@notification.subject) %>
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You have received a new notification:
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<%= @notification.body.html_safe? ? @notification.body : strip_tags(@notification.body) %>
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Visit <%= root_url %> and go to your notifications for more info.